Apparatus for thoroughly equably dyeing yarn in the form of a large yarn package



Dec. 6, 1966 H. BUDDECKE 3,289,440

APPARATUS FOR THOROUGHLY EQUABLY DYEING YARN IN THE FORM OF A LARGE YARN PACKAGE Filed Nov. 15, 1962 4 Sheets-$heet 1 F lg 7 IN V EN TOR.

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APPARATUS FOR THOROUGHLY EQUABLY DYEING YARN IN THE FORM OF A LARGE YARN PACKAGE Filed Nov. L5, 1962 4 Sheets-Sheet 2 Fig. 3

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H. BUDDECKE Dec. 6, 1966 APPARATUS FOR THOROUGHLY EQUABLY DYEING YARN IN THE FORM OF A LARGE YARN PACKAGE 4 Sheets-Sheet 5 Filed Nov. L3, 1962 Fig. 4

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Dec. 6, 1966 H. BUDDECKE 3,289,440

APPARATUS FOR THOROUGHLY EQUABLY DYEING YARN IN THE FORM OF A LARGE YARN PACKAGE Filed Nov. L3, 1962 4 Sheets-Sheet 4 Fig-9 Fig. 70

IN V EN TOR.

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United States Patent 6 Claims. (11. 68-189) The present invention relates to a large yarn package which is intended for use in textile machines with high yarn consumption operating continuously for long periods, and which is also capable of fitting if required to a movable part of the machine. It also enables the yarn to be evenly dyed in a continuous operation without exerting stress, and also to undergo other lengthy, continuous work processes such as steaming and drying. Although the package can accommodate considerable weights of yarn and lengths of thread, it enables the yarn thread to be completely unwound without noticeable stress and without tangling.

The heretofore proposed yarn packages for large quantities of yarn, for example, cross-wound bobbins, have a It is not possible with these to obtain absolutely even dyeing since the rigidly secured yarn portions in the coil are frequently overtensioned, torn or lengthened, due to shinkage in the dye liquor. This is particularly true in the case of a series of known synthetic warns which, before dyeing in the form of a coil or the like, must as a rule be subjected to a padding process, i.e. a form of stream treatment which can be eifected only in the form of loose skeins. The windingon beam, which accommodates very great quantities of yarn is for a special purpose. It comprises a large number of threads wound on in adjacent radial planes. The winding-on operation must be carried out very smoothly and with special care if the yarn is intended to be dyed thereon. Even the slightest irregularities of winding, produced for example by differing thread tensions, may result in the dye liquor, which is forced through in outward direction at pressure, finding a free outlet through points at which the winding is looser, whereby not only is the dyeing effect completely spoiled but the warn may also be partly destroyed.

The features mentioned above as desirable with reference to a large yarn package comprising yarn winding strips wound in the form of a coil and with yarn windings arranged obliquely to the longitudinal axis of the strip, are obtained in a system whereby two or more winding strips are spooled one above the other, the windings of adjoining strips being arranged obliquely to each other. The same conception may be applied not only to yarn winding strips but also to rove winding strips. This arrangement enables any number of yarn winding strips of any desired length to be wound on one above the other to form a spool of any desired size Without the necessity of inserting divider leaf strips between the various winding strips or windings of the spool to prevent tangling of the yarn, as is normally required in known packages. These divider strips render impossible the dyeing and other processing of the yarn in the package and have also other disadvantages.

In French Patent No. 1,198,823 of the inventor, a yarn package is proposed in which square winding strips elements wound according to the above-mentioned principle are layered in various directions. The time involved in the winding operation is, however, much greater than in the case of the yarn package according to the present invention, because the winding is performed with a winding head working intermittently; the motion in this case is a 3,289,44d Patented Dec. 6, 19%6 reciprocating motion of the yarn package and other parts, which is time and energy-consuming, apart from the fact that the package-forming device is of a more complicated and more expensive construction.

According to the invention each winding strip has allotted to it either a wide-mesh netting strip of corrosion resistant metal or plastic filament of very fine gauge to be wound with the strip, or longitudinally disposed divider wires or threads which are widely spaced and are also of very fine gauge, the purpose of which is to enable the various yarn winding strips to be separated for individual use and to enable the multilayer winding strip to be conveyed through treatment apparatus and to undergo such treatment whilst preserving the relative positions of the windings.

The machine for producing the yarn package employs basically the winding head for continuous. winding of yarn which is described for example in German Patent No. 929,123 of the inventor. The winding head according to the invention is designed to produce a multilayer winding strip with the windings of the various winding strips disposed obliquely to each other, for which purpose a separate winding head is allocated to each winding strip of the yarn package, the nose of each winding mandrel being placed obliquely in relation to the nose of the winding mandrel allocated to the adjacent winding strip, at an angle of between 20 and 50, whilst the position of the noses of the winding mandrels, relative to the longitudinal direction of the winding strip remains within an angular range of approximately '40.

By means of such a machine a large yarn package of maximum weight of yarn and length of thread may be produced in a very short time, which package may be efficiently and evenly dyed and subjected to other treatment processes, irrespective of any changes which the yarn may undergo during treatment such as dyeing, drying and the like, whilst the threads may be unwound to the last without tangling.

An embodiment of the invention will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 is a diagrammatic illustration of the construction of the device for producing the yarn package, shown in side-elevation;

FIG. 2 is a plan view of the device of FIG. 1;

FIG. 3 is a side-elevation in section of an embodiment of the device, fitted with two winding heads;

FIG. 4 is a perspective part-view of the deposition of the yarn windings from the winding heads;

FIG. 5 is an end-view of the winding mandrel of this embodiment, as seen from the winding-on end of the mandrel;

FIG. 6 is a plan view of a three-layer winding strip in which one longitudinal side of each winding is outwardly curved;

FIG. 7 is an end view of a winding mandrel for this purpose, as seen from the winding-on end of the mandrel;

FIG. 8 is a perspective view of a modified form of multilayer winding strip;

FIG. 9 is a vertical section through the centre of a dye kettle to accommodate the yarn package according to the invention;

FIG. 10 is a side view of a tension clip for the netting strip, partly in section;

FIGS. 11 and 12 are plan and side views, respectively, of the means for connecting the netting strip to the cover plate of a dye kettle, and

FIG. 13 is a diagrammatic illustration of the passage of the multi-layer winding strip through a treatment device.

The basic construction of the yarn package 1 (FIG. 1) and of the device for the manufacture thereof is shown in FIGS. 1 and 2. A multi-layered yarn winding strip 3 is wound in the form of a coil 4 on to a winding bush 2 which is perforated or of wire-net construction, the coil comprising a plurality of winding strips 5, 6, 7, i.e. in this case three strips. The individual windings 8 (FIG. 2) of the winding strips are of elongated helical shape and neighbouring windings overlapping one another in the manner of fish scales. The windings of the central winding strip 6 lie at a right angle to the longitudinal direction of the strips, whilst those of the winding strips and 7 are inclined to right and left, so that the windings of adjacent winding strips are in each case placed obliquely to each other. This also applies where more than three winding strips are employed. In this case, the fourth winding strip in upward sequence would lie at a rightangle to the direction of the strip, and the windings of the subsequent winding strip above this would be inclined obliquely to the right of it.

The various windings are fed from fixed winding mandrels 9, 11, 12 (FIG. 1). Due to the mutually inclined position of the windings of adjacent winding strips, the insertion of divider elements within the multi-layer winding strips is generally necessary to prevent the windings of adjacent winding strips from encroaching upon each other. In order to ensure however that, in the case of certain kinds of yarn, the windings of the multi-layer winding strip maintain their position during winding on and off and in the various treatment processes, each winding strip is covered over with a netting strip 13 (see also FIGS. 4 and 6) of very fine gauge, corrosionresistant filament of metal or plastic material. Instead of the netting strips a plurality of fine parallel divider wires or threads 14 (FIG. 4) may be employed. By means of these netting strips or wires, the multi-layer winding strip 3 may be kept under tension and drawn tight or separated into the various winding strips 5, 6, 7, as will be explained hereinafter.

In the formation of the yarn package the netting strips 13 or divider wires 14 are fed in from bobbins and conveyed over guide rollers 15 (FIG. 1). The winding bush 2 is thus set in rotation in the direction of the arrow 16 (FIG. 1), so that the windings delivered from the winding mandrels pass correctly positioned into the coil 4. The pressure exerted on the windings 8 'by the stripping action of the winding mandrels is absorbed by a fixed table 17. In order to ensure that the windings of the lowermost winding strip of the multi-layer strip 3 are also properly fed into the coil 4, an endless belt 13 passes round the table 17, the belt being caused to move in relation to the speed of deposition of the windings.

It is manifest that a yarn package of any desired size may be obtained by entirely continuous operation in the manner described. The greater the number of separate winding strips in each multi-layer 3 and also of winding heads, the more rapidly the formation takes place.

A special device is provided to maintain the outer diameter of the wound coil 4 level with the working surface of the table 17. The coil to be wound may also be so arranged that its periphery is supported upon the table 17.

It is also possible to deliver the various winding strips at different points on the periphery of the coil 4, in which case the provision of a table 17 is no longer necessary, but in certain cases means must be provided for radial displacement of the mandrels 9, 11, 12 relative to the coil 4.

In the embodiment according to FIG. 3 the multi-layer strip 3 comprises two separate winding strips 5, 6 of which the winding strip 5 is wound from a winding head 19, and the winding strip 6 from a winding head 21.

The noses 22, 23 of the two mandrels 9 and 11 are arranged obliquely to each other, as shown in FIG. 4, so that the windings of the two strips cannot engage in each other. For each winding head the yarn 24 (FIG. 3) is conveyed from a cop 25 through an eyelet 26 of a central bore 27 of a rotating yarn guide bush 28 of the winding head. The bore 27 is connected to a yarn guide aperture 29 encircling the fixed winding mandrel 9, which aperture 29 winds the yarn around a circular cross-section winding zone 31 of the mandrel. The circular winding zone 31 merges into a shaped portion 32 of the mandrel and arrives gradually at the elongated cross-section of the nose 22 (FIG. 5) or 23 (FIG. 3), the construction being such that the peripheral length of each radial crosssection of the winding head in the shaped portion 32 between the zone 31 and the nose 22 remains constant, whereby the successive windings are conveyed by feed belts 33 (FIGS. 4 and 5) to the nose 22, 23 without stretching or slackening and are delivered from these with a certain thrust action.

The yarn guide bushes 28 (FIG. 3) are mounted in ball-bearings in fixed casings 34 of the winding heads and are driven by means of a common motor 35 by way of a V-belt 36, shaft 37, bevel pinions 38 and bevel teeth 39 on the yarn guide bushes 28.

At the same time the winding bush 2 mentioned above (FIGS. 1 and 3) is set in rotation in the direction of the arrow 41 (FIG. 3) by way of a V-belt 42 which engages on the one hand in a V-groove 43 in the yarn guide bush 28, and on the other hand, in a V-pulley 44 for stepless transmission, which is controlled by a knob 40. The bush carrying the adjustable V-pulley 44 is immovably mounted on a fixed shaft 45 which engages by means of a bevel wheel 46 in a fixed bevel wheel 48 connected to a chain wheel 47. The chain wheel 47 is connected via an endless chain 49, a differential gear system 51 (which will be described hereinafter), a chain 52 and a chain wheel 53 to a fixed worm 54, which rotates a worm wheel 55 displaceably but non-rotatably connected to a vertically displaceable keyed shaft 56. At the upper end of the keyed shaft 56 the rotation is transmitted by a bevel wheel 57 via a pair of bevel wheels 58 to a bevel pinion 61 mounted on a shaft 59, and rotates the winding bush 2, which is non-rotatably mounted on the shaft 59, in the direction of the arrow 41. Thus, the netting strips 13 or divider wires 14 (FIG. 1) are drawn oif via their guide rollers 15 from cops 62 (FIG. 3) or from a supply reel 63.

The rotary speed of the shaft 45 (FIG. 3) and consequently the rotary speed of the winding bush 2 is regulated by the control knob 40 of the variable V-belt pulley 44 in such a manner that the peripheral speed of the wound coil 4, at its smallest diameter, corresponds exactly to the delivery speed of the windings 8 from their winding mandrels 9, 11.

Since the peripheral speed of the wound coil 4 increases according to the increase in its diameter with constant rotary drive by way of the shaft 45, in order to ensure even delivery of the yarn windings, means must be provided for ensuring that the rotary drive of the winding bush 2 is decelerated in proportion to the increase in diameter of the coil 4. This is provided by the differential gear system 51 with the aid of the netting strip 13.

The supply reel 63 (FIG. 3) is rotatably mounted on a fixed shaft 64 and is provided with a brake drum 65 co-operating with a belt brake 66, by means of which the netting strip 13 may be gently braked. Said strip 13 passes over a netting feed roller 67 which is caused to rotate following the arrow 71 by way of a worm wheel 68 connected thereto and a worm 69 secured to the shaft 45. The netting strip 13 then passes over a guide roller 72 and a regulating roller 73 towards the guide roller 15 at the delivery end of the mandrel 9. Between the rollers 72 and 73 an idler roller 75 loaded with a weight 74 is inserted. The regulating roller 73 is connected via a pair of bevel pinions 76, 77 and a fixed shaft 78 to a bevel pinion 79 which engages in the bevel teeth 81 of an adjusting member 82 of the gear system 51.

Accordingly, the gear system 51 is influenced firstly through the chain 49 and chain wheel 83 by a drive system coresponding to the constant rotary speed of the shaft 45, and, secondly, the adjusting member 82 is influenced by a drive system corresponding to the particular peripheral speed of the wound coil 4.

The drive means 51 may assume the form of a mechanical or hydraulic stepless transmission system in which the constant rotary speed produced by the chain wheel 83 is varied in relation to the rotation of the adjusting member 82, e.g. by altering the oil content of the drive system, and drives a chain wheel 84 in engagement with the above-mentioned chain 52 with corresponding variation in speed.

Since the netting strip 13 is drawn along by the wound coil 4 as it rotates, in its portion as far as the roller 75 it has always a speed of motion corresponding to the peripheral speed of the coil 4.

The drive means 51 is so contrived that, as soon as winding on to the bush 2 begins, rotation of the shafts 45 and 78, or as the case may be, of the chain wheel 83 and adjusting member 82, produces rotation of the chain wheel 84, thus occasioning a peripheral speed of the coil 4 corresponding exactly to the speed of delivery of the windings 8 from the mandrels 9 and 11. As the diameter of the coil 4 increases, the adjusting member 82 rotates correspondingly faster due to the greater speed of the netting strips 13 and to the greater peripheral speed of the regulating roller 73, thus causing the chain wheel 84 to rotate more slowly, whereby the peripheral speed of the coil 4 is reduced in turn to correspond exactly to the delivery speed of the windings 8 from the mandrels 9 and 11. In this way the peripheral speed of the coil is automatically regulated at all times to the constant delivery speed of the windings.

The brake belt 66 is intended to maintain the netting strip 13 in contact with the netting feed roller 67, and the function of the weight 74 is to maintain the netting strip 13 under constant unvarying tension, so that the winding proceeds at unvarying density throughout, irrespective of the winding speed of the coil 4. Moreover, the weight 74 maintains the frictional effect between the netting strip 13 and the regulating roller 73. The idler roller 75 remains in the top position when the peripheral speed of the wound coil 4 is correct, but, when this peripheral speed is excessive, it drops, and consequently rises when the peripheral speed is too low.

To ensure that the peripheral surface of the wound coil 4 always remains at a certain slight distance from the nose of the mandrels 9, 11 and that the windings are deposited on the coil past the end of the nose so that they can accompany the motion of the coil, the winding bush 2 must be correspondingly lowered as the diameter of the coil 4 increases. For this purpose, the shaft 59 on which the bush 2 is mounted is carried, together with the gears 58 and 57, in a housing 85 supported on a bolt 86 which is mounted in a fixed vertical guide 87, so that it is vertically displaceable but cannot rotate. The lower extremity of the bolt 86 assumes the form of a threaded spindle 88 which engages in a worm wheel 89, said worm wheel being rotatably mounted in a fixed casing 91 and engaging in a worm 92 also carried in the housing 91. The worm 92 is driven from an electric motor 94 by way of a chain wheel 93. The guide roller for the mandrel 11 is fitted to a lever 96 which is pivotable about the point 95 and which co-operates on the rear arm 97 with a reversing switch 98 connecting the motor 94 to the main current by way of a lead 99.

Provided the periphery of the wound coil is maintaining the correct distance from the delivery and of the mandrels, the switch 98 is open and the motor 94 is at rest. Should the periphery of the delivery end of the mandrels approach too closely, the switch 98, acting through the arm 97, sets the motor 94 in a current direction which causes the housing together with the winding bush 2 to move downwards by way of the worm 92, worm wheel 89 and spindle 88. As soon as the prescribed spacing is restored, the motor 94 is cut out by the switch 98. When the position of the winding bush 2 is too low, the switch 98 is reversed by means of the arm 97 to the opposite current direction, whereby the housing is raised until the correct spacing is once more adjusted.

Since the superimposed windings in the wound coil 4 are in contact at uniformly distributed points through the whole interior of the coil 4, since the thread members are also evenly distributed at all points in the coil, and since the coil body has over its entire length and in all radial directions uniform density and resistance to the passage of fluids, it is particularly suited to the dyeing of yarn in a dye kettle 101 of the kind shown in FIG. 9 and also in the similar form employed for crosswound bobbins and the like. The spools 4 are threaded by their winding bushes 2 (FIG. 2) upon a perforated rising tube 102 (FIG. 9) of the dye kettle in numbers corresponding to their length, and the uppermost spool wall is covered over with a loosely fitting cover plate 103 which presses gently, by its own weight or by slight pressure of springs 104 upon the walls of the spools 4. This arrangement is necessary as the yarn, under the influence of the dye liquor, either shrinks or swells or stretches, according to the nature of the yarn. In the case of shrinkage, yarn areas of lesser density would occur below the cover plate 103 or at other levels, so that the dye liquor conveyed at high pressure through the coil by way of the rising pipe 102 would force a way outwards, whereby the dyeing action may be nullified and the yarn partially destroyed. In the case of stretching or swelling of the yarn, irregular pressure areas would occur in the yarn, which would also prevent even dyeing if the cover plate were rigidly fitted. This arrangement and the possibility in general of permitting the coil 4 movement laterally of the ends of the windings, are of special importance for most synthetic yarns, which may be dyed only with great difficulty in skein form because, when they are on cross-wound bobbins or the like, they become so tensioned during dyeing that they form a core whic his almost impermeable to the dye liquor and the winding is very easily broken.

A modified embodiment of the multi-layer winding strip which takes into account these particular circumstances is illustrated in FIG. 8. The netting strips 13 and divider wires 14 are replaced by thin perforated strips of foil 105 which have at their edges distance elements 106, preferably in the form of resilient tubes of synthetic material. With such superimposed perforated strips of foil and their distance elements 106 gaps of a certain height are formed;

between every two successive superimposed strips 105, so that the yarn windings 8 may be accommodated loosely, free of all pressure, and in any direction therein, and are. permitted to shrink or swell or stretch to any extent, even when the dye liquor is flowing through, without being compressed or tensioned. With this arrangement, a single-layered strip may also be wound into a coil since there is no risk of adjoining coil windings entangling with each other.

As illustrated in FIG. 9, the inner spools 4 may be enclosed in outer spools 107 if they have a winding bush 108 of suitably large diameter. The dye liquor issues from the hollow dyeing plate 109 into a hollow rising cylinder 111, the inner wall of which is closed and the outer wall 112 is perforated, and leaves the spools 107 at the outer periphery. In the case of the inner spools 4 the dye liquor emerging at its outer peripheral surface enters a hollow cylinder 113 from which it is then drawn off.

FIGS. 6 and 7 show a modified form of the yarn winding strips 5, 6 in which the two lateral portions of the windings which, in the embodiments described in FIGS. 1 and 4, are parallel to each other, are so arranged that they form a cross-structure. For this purpose, one lateral surface 114- (FIG. 7) of the nose portions 22, 23 of the winding mandrels 9, 11, has a convex curve, so that the resulting windings are outwardly curved on one side 115 and are substantially obliquely arranged relative to the adjacent lateral winding portions 116 which remain rectilinear. Consequently, they are in point contact, not linear contact with the rectilinear portions 116 adjacent thereto. This also assists the evenness of dyeing.

Winding strips of this shape may also be wound in rnulti-layer manner to form a coil. Since, however, the lateral portions of the windings of each strip are themselves in point contact, it is not absolutely necessary in this case to have two or more consecutive winding strips with windings of differing inclinations, i.e. all winding strips forming a coil 4 may have windings of the same inclination; one single winding strip may also be wound into a coil without the necessity of providing a divider element to prevent meshing of adjoining windings.

In order to ensure that the wound coils remain firmly wound and under slight tension during dyeing, and also in order to be able to release these when the various strips of the rnulti-layer winding strip is unwound and passed through treatment apparatus, a tension clip 117 (FIG. is provided which comprises two interlocking parts 119 and 121 pivotally connected to each other by a pin 118. The netting strip 13 or divider threads 14 may be secured in this clip 117 by tensioning of a screw 122.

In the dye-kettle according to FIG. 9 the extremity of the netting strip 13 is held under slight pressure by means of this clip 117 in the manner illustrated in FIGS. 11 and 12. The clip 117 is embraced by a hook 123 to prevent it from rotating, the other extremity of said hook 123 engaging by way of a round hook 124 upon an anchor rod 125, the extremities of which are lodged in outwardlyopen slots 126 in the cover plate 103 and in a corresponding, oppositely-situated plate. The central portion of the hooks 123 assumes the form of a spring 127, so that, by inserting the rod 125 in particular slots 126, the tension on the netting strip 13 may be regulated. One end 128 (FIG. 11) of the anchor rod 125 may be inserted in a sleeve 129 so that it is displaceable against tension of a spring 131; in this case, simple bore holes may be provided instead of the open slots 126.

The multi-layer winding strips 3 may be dyed or otherwise treated, e.g. sized and dried, in an unwound state instead of in coils. For this purpose a treatment apparatus is employed which' is illustrated in FIG. 13. Here, the rnulti-layer winding strip is unwound from the coil 4 and is passed to-and-fro through the treatment area 132 of the apparatus. In this connection, two endless con veyor belts 133 and 134 are provided each of which engages one side of the multi-layer winding strip and which are actuated by a motor 135. The treatment elements, e.g. heating or radiation elements, nozzles or the like, are arranged in the gaps between the various moving lengths of material.

As the multi-mesh winding strip 3 leaves the apparatus, it may be resolved into its various separate strips 5, 6, whilst at the same time, the netting strips 13 and divider threads 4 are separately wound, so that these may be ire-employed. Rewinding is effected by winding rollers 137 driven by endless belts 136. The two separate winding strips 5, 6 may also be Wound on to special bobbins or conveyed directly to an appropriate textile machine in the form of a drawn-out thread.

I claim:

1. In an apparatus for thoroughly equably dyeing yarn in form of a large yarn package having a central perforated bush and consisting of two or more strips of windings having a flat, helical and elongated shape, the longitudinal direction of the windings being arranged transversely to the direction of said strip, divider filament strips consisting of fine wires for supporting, conveying and separating each two neighbouring yarn winding strips from each other, the wires thereof having high tensile t ngth and $1 01 a fine gauge as to not injuring the equableness of dyeing, said winding strips together with said divider filament strips being rolled upon said bush, a dyeing kettle having a central perforated rising pipe for introducing the dyeing liquid into said yarn package, said yarn package adapted to be mounted, by means of its bush, on said rising pipe, and means for keeping all points of contact between yarn parts of neighbouring winding strips under a mutual equable gentle pressure, said pressure means consisting of a device for holding, during the dyeing process, the yarn pack under a gently resilient pressure approximately in the direction of the elongated windings, and a device for holding the winding strips under a gently resilient traction at their ends in peripheral direction.

2. In an apparatus according to claim 1, said device for holding the yarn package under a gently resilient depression approximately in the direction of the elongated windings, comprising a movable cover plate for covering said dyeing kettle at the top, and resting by a gentle pressure upon the upper front face of the yarn windings in such a manner that said cover plate may yield upwards or downwards on shrinking or lengthening of the yarn on being treated by dyeing liquid.

3. In a dyeing kettle according to claim 1, means in said dyeing kettle for gripping the end of said filament strip, fixing means for holding said gripping means, resilient means between said gripping means and said holding means, and means for setting said holding means and for tensioning said filament strip peripheral direction.

4. In an apparatus according to claim 1, two disks each at one end of said bush, each having a series of open notches at its circumference, a holding bar cooperating therewith, a tension clip for gripping the end of said filament strip, and springs connecting said tension clip with said holding bar, whereby on engaging said holding bar into other pairs of said notches the desired tension of said filament strip can be adjusted.

5. In an apparatus according to claim 4, said tension clip consisting of two portions pivotally connected to each other and means for interlocking them under clamping the end of said filament strip, said springs having at their one ends hooks embracing said tension clips and at their other ends hooks embracing said holding bar, whereby the filament strip can be detached from the holding bar.

6. In an apparatus according to claim 1 and a second bush carrying one or more yarn strip rolls, surrounding said central bush and the yarn pack rolls put up thereon, a hollow dye plate at the lower end of said bush and means for leading the dyeing liquid from the :hollow dye plate in parallel to the middle and the outer yarn strip packs.

References Cited by the Examiner UNITED STATES PATENTS 509,351 11/1893 Maertens 68189X 1,906,015 4/1933 Schwarzkopf 68189 1,933,980 11/1933 Hornbuckle et al. 68-189 1,960,183 5/1934 Garey et al 68189 X 2,350,191 5/1944 Raymond 68/189 2,412,508 12/1946 Jensen 242-54 2,439,314 4/1948 Mulligan et al. 68189 2,498,540 2/1950 Fryer et al. 68189 2,594,366 4/1952 Stienen 68198X 2,600,574 6/1952 Rayburn 226-472 2,804,973 9/ 1957 Buddecke 206-64 2,831,747 4/1958 Gould 68189X 2,904,273 9/ 1959 Turner et al. 242-54 3,015,427 1/1962 Kessler 226172 3,061,088 10/1962 Buddecke 20664 IRVING BUNEVICH, Primary Examiner.

R. C. MADER, Examiner.

S. N. GILREATH, Assistant Examiner. 

1. IN AN APPARATUS FOR THOROUGHLY EQUABLY DYEING YARN IN FORM OF A LARGE YARN PACKAGE HAVING A CENTRAL PERFORATED BUSH AND CONSISTING OF TWO OR MORE STRIPS OF WINDINGS HAVING A FLAT, HELICAL AND ELONGATED SHAPE, THE LONGITUDINAL DIRECTION OF THE WINDINGS BEING ARRANGED TRANSVERSELY TO THE DIRECTION OF SAID STRIP, DIVIDER FILAMENT STRIPS CONSISTING OF FINE WIRES FOR SUPPORTING, CONVEYING AND SEPARATING EACH TWO NEIGHBOURING YARN WINDING STRIPS FROM EACH OTHER, THE WIRES THEREOF HAVING HIGH TENSILE STRENGTH AND SUCH A FINE GAUGE AS TO NOT INJURING THE EQUABLENESS OF DYEING, SAID WINDING STRIPS TOGETHER WITH SAID DIVIDER FILAMENT STRIPS BEING ROLLED UPON SAID BUSH, A DYEING KETTLE HAVING A CENTRAL PERFORATED RISING PIPE FOR INTRODUCING THE DYEING LIQUID INTO SAID YARN PACKAGE, SAID YARN PACKAGE ADAPTED TO BE MOUNTED, BY MEANS OF ITS BUSH, ON SAID RISING PIPE, AND MEANS FOR KEEPING ALL POINTS OF CONTACT BETWEEN YARN PARTS OF NEIGHBOURING WINDING STRIPS UNDER A MUTUAL EQUABLE GENTLE PRESSURE, SAID PRESSURE MEANS CONSISTING OF A DEVICE FOR HOLDING, DURING THE DYEING PROCESS, THE YARN PACK UNDER A GENTLY RESILIENT PRESSURE APPROXIMATELY IN THE DIRECTION OF THE ELONGATED WINDINGS, AND A DEVICE FOR HOLDING THE WINDING STRIPS UNDER A GENTLY RESILIENT TRACTION AT THEIR ENDS IN PERIPHERAL DIRECTION. 